private bool CommonApply(IOperationCollection operations, IDataContainer data)
{
int commonAction = operations.CommonAction;
int changes = 0;
switch (commonAction)
{
case OperationCode.REPLACE:
{
foreach (var opr in operations)
{
data[opr.FromKey] = ((ReplaceOperation)opr).Record;
changes++;
}
}
break;
case OperationCode.INSERT_OR_IGNORE:
{
foreach (var opr in operations)
{
if (data.ContainsKey(opr.FromKey))
{
continue;
}
data[opr.FromKey] = ((InsertOrIgnoreOperation)opr).Record;
changes++;
}
}
break;
case OperationCode.DELETE:
{
foreach (var opr in operations)
{
if (data.Remove(opr.FromKey))
{
changes++;
}
}
}
break;
case OperationCode.DELETE_RANGE:
{
foreach (var opr in operations)
{
if (data.Remove(opr.FromKey, true, opr.ToKey, true))
{
changes++;
}
}
}
break;
case OperationCode.CLEAR:
{
foreach (var opr in operations)
{
data.Clear();
changes++;
break;
}
}
break;
default:
throw new NotImplementedException();
}
return(changes > 0);
}
public bool Leaf(IOperationCollection operations, IDataContainer data)
{
//sequential optimization
if (operations.AreAllMonotoneAndPoint && data.IsInternallyOrdered && (data.Count == 0 || operations.Locator.KeyComparer.Compare(data.Last.Key, operations[0].FromKey) < 0))
{
return(SequentialApply(operations, data));
}
//common action optimization
if (operations.CommonAction != OperationCode.UNDEFINED)
{
return(CommonApply(operations, data));
}
//standart apply
bool isModified = false;
foreach (var opr in operations)
{
switch (opr.Code)
{
case OperationCode.REPLACE:
{
data[opr.FromKey] = ((ReplaceOperation)opr).Record;
isModified = true;
}
break;
case OperationCode.INSERT_OR_IGNORE:
{
if (data.ContainsKey(opr.FromKey))
{
continue;
}
data[opr.FromKey] = ((InsertOrIgnoreOperation)opr).Record;
isModified = true;
}
break;
case OperationCode.DELETE:
{
if (data.Remove(opr.FromKey))
{
isModified = true;
}
}
break;
case OperationCode.DELETE_RANGE:
{
if (data.Remove(opr.FromKey, true, opr.ToKey, true))
{
isModified = true;
}
}
break;
case OperationCode.CLEAR:
{
data.Clear();
isModified = true;
}
break;
default:
throw new NotImplementedException();
}
}
return(isModified);
}
